Exoplanet
alf Ari b
65.92 light-years
- Discovery
- Radial Velocity · 2010
- Radius
- 13.4 Earth radii
- Mass
- 572.07 (+63.563 / −63.563) Earth masses
- Orbital period
- 380.8 (+0.3 / −0.3) days
- Semi-major axis
- 1.2 AU
- Equilibrium temperature
- 747.22 K
- Mass provenance
- Msini
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00